Combine first 2 ingredients in large sauce pan; simmer 20 minutes. Add next 6 ingredients; heat through. Thaw puff pastry. Cut dough into 4-inch squares. Bake according to package directions. Split puff pastry squares horizontally. Place bottom of square on plate. Fill with ½ cup chicken mixture. Top with upper square of puff pastry. Serve immediately. Can use puff pastry shells, baked according to package directions and filled with chicken mixture or use for pot pie filling. Makes about 8 servings.